LangStandard.h revision 221345 
1//===--- LangStandard.h -----------------------------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef LLVM_CLANG_FRONTEND_LANGSTANDARD_H
11#define LLVM_CLANG_FRONTEND_LANGSTANDARD_H
12
13#include "llvm/ADT/StringRef.h"
14
15namespace clang {
16
17namespace frontend {
18
19enum LangFeatures {
20  BCPLComment = (1 << 0),
21  C99 = (1 << 1),
22  C1X = (1 << 2),
23  CPlusPlus = (1 << 3),
24  CPlusPlus0x = (1 << 4),
25  Digraphs = (1 << 5),
26  GNUMode = (1 << 6),
27  HexFloat = (1 << 7),
28  ImplicitInt = (1 << 8)
29};
30
31}
32
33/// LangStandard - Information about the properties of a particular language
34/// standard.
35struct LangStandard {
36  enum Kind {
37#define LANGSTANDARD(id, name, desc, features) \
38    lang_##id,
39#include "clang/Frontend/LangStandards.def"
40    lang_unspecified
41  };
42
43  const char *ShortName;
44  const char *Description;
45  unsigned Flags;
46
47public:
48  /// getName - Get the name of this standard.
49  const char *getName() const { return ShortName; }
50
51  /// getDescription - Get the description of this standard.
52  const char *getDescription() const { return Description; }
53
54  /// hasBCPLComments - Language supports '//' comments.
55  bool hasBCPLComments() const { return Flags & frontend::BCPLComment; }
56
57  /// isC99 - Language is a superset of C99.
58  bool isC99() const { return Flags & frontend::C99; }
59
60  /// isC1X - Language is a superset of C1X.
61  bool isC1X() const { return Flags & frontend::C1X; }
62
63  /// isCPlusPlus - Language is a C++ variant.
64  bool isCPlusPlus() const { return Flags & frontend::CPlusPlus; }
65
66  /// isCPlusPlus0x - Language is a C++0x variant.
67  bool isCPlusPlus0x() const { return Flags & frontend::CPlusPlus0x; }
68
69  /// hasDigraphs - Language supports digraphs.
70  bool hasDigraphs() const { return Flags & frontend::Digraphs; }
71
72  /// isGNUMode - Language includes GNU extensions.
73  bool isGNUMode() const { return Flags & frontend::GNUMode; }
74
75  /// hasHexFloats - Language supports hexadecimal float constants.
76  bool hasHexFloats() const { return Flags & frontend::HexFloat; }
77
78  /// hasImplicitInt - Language allows variables to be typed as int implicitly.
79  bool hasImplicitInt() const { return Flags & frontend::ImplicitInt; }
80
81  static const LangStandard &getLangStandardForKind(Kind K);
82  static const LangStandard *getLangStandardForName(llvm::StringRef Name);
83};
84
85}  // end namespace clang
86
87#endif
88